CompTIA
220-802 · Question #671
220-802 Question #671: Real Exam Question with Answer & Explanation
The correct answer is C: Laptop function key settings. On a laptop, screen brightness is controlled by dedicated function key combinations (Fn + brightness keys), making that the first setting to check when the display appears too dim.
Question
Ann, a user, reports her display is too dim. Which of the following should be checked to potentially increase the brightness of the display?
Options
- ADesktop power supply wattage
- BIncrease the screen resolution settings
- CLaptop function key settings
- DMonitor power supply cable
Explanation
On a laptop, screen brightness is controlled by dedicated function key combinations (Fn + brightness keys), making that the first setting to check when the display appears too dim.
Common mistakes.
- A. The desktop power supply wattage is irrelevant to a laptop display; laptops use an internal battery and adapter, and power supply capacity does not directly control backlight brightness.
- B. Increasing screen resolution changes the pixel density of the displayed image but does not affect the backlight intensity or perceived brightness.
- D. The monitor power supply cable carries power to an external desktop monitor; on a laptop the display is powered internally, so this is not applicable.
Concept tested. Laptop function key brightness control
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